Lions head coach Dan Campbell said Reynolds tested positive for COVID-19 on Monday, Kyle Meinke of MLive.com reports.
Detroit is expected to formally place Reynolds on the reserve/COVID-19 list at some point in the next couple of days. If he's vaccinated, Reynolds will have a chance to test out of the protocols ahead of Sunday's game in Seattle, though his availability for that contest is far from a given. Since he was claimed off waivers from the Titans on Nov. 10, Reynolds has logged at least 63 percent of the Lions' offensive snaps in all six of his appearances, stringing together an 18-295-2 receiving line on 33 targets over that stretch.